WO2021230489A1 - Barre omnibus offrant une excellente sécurité en cas d'incendie - Google Patents

Barre omnibus offrant une excellente sécurité en cas d'incendie Download PDF

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Publication number
WO2021230489A1
WO2021230489A1 PCT/KR2021/003674 KR2021003674W WO2021230489A1 WO 2021230489 A1 WO2021230489 A1 WO 2021230489A1 KR 2021003674 W KR2021003674 W KR 2021003674W WO 2021230489 A1 WO2021230489 A1 WO 2021230489A1
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Prior art keywords
metal
bar
bus bar
metal bar
fire
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PCT/KR2021/003674
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English (en)
Korean (ko)
Inventor
황성택
이원태
Original Assignee
주식회사 엘지에너지솔루션
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Priority to US17/762,938 priority Critical patent/US20220415537A1/en
Priority to EP21804617.5A priority patent/EP4024601A4/fr
Priority to JP2022513378A priority patent/JP7375292B2/ja
Priority to CN202180005433.4A priority patent/CN114424400A/zh
Publication of WO2021230489A1 publication Critical patent/WO2021230489A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J1/00—Adhesives based on inorganic constituents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/383—Flame arresting or ignition-preventing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/526—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/597—Protection against reversal of polarity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/527—Flameproof cases
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/10—Presence of inorganic materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/02—Single bars, rods, wires, or strips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a bus bar, and more particularly, to a bus bar for carrying a large current of a battery module/pack and having a coating structure having excellent fire safety.
  • lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, so charging and discharging are free, The self-discharge rate is very low and the energy density is high, attracting attention.
  • secondary batteries have been widely used not only in small devices such as portable electronic devices, but also in medium and large devices such as electric vehicles and power storage systems (ESSs).
  • ESSs electric vehicles and power storage systems
  • a bus bar is widely used as an electrical connection means of the battery modules, and since it can stably flow a large current even with a relatively small thickness compared to a cable, it is usefully used as a large current conducting means.
  • the bus bar may be provided in the form of a metal bar such as copper or aluminum with good electrical conductivity, and for safety, the remaining parts except for both ends of the metal bar connected to the terminal are covered with a tube or an injection-molded material.
  • the busbar may be divided into a rigid busbar and a flexible busbar.
  • the flexible bus bar 1 can be made into a desired shape by bending or twisting a necessary part as shown in FIG. 1 , so it can be usefully used when connecting battery modules with different vibration axes or complicated paths. .
  • the flexible bus bar 1 is flexible and can be easily deformed, but when the battery pack is internally ignited, for example, the insulating tube 2 is lost and sagged as shown in FIG. There is a problem that a short circuit may be caused by touching the metal object 4 .
  • the present invention was devised in consideration of the above problems, and an object of the present invention is to provide a bus bar configured so that a short circuit is not caused because the metal bar does not directly touch the surrounding metal object even if the exterior covering material of the bus bar is lost in case of fire.
  • a metal bar formed of an electrically conductive metal material; a bandage member surrounding the periphery of the remaining portion except for both ends of the metal bar; and a bus bar including an insulating tube surrounding the metal bar and the bandage member together.
  • the bandage member may be provided in the form of a metal wire whose surface is coated with a coating material having insulation and fire resistance.
  • the coating material may be at least one of mica, silica, and ceramic.
  • a plurality of the metal wires may be provided in the form of an annular metal band.
  • the plurality of annular metal bands may be disposed at regular intervals along the length direction of the metal bar.
  • the annular metal band may be press-fixed to the metal bar while surrounding the metal bar.
  • a fire protection tape made of a fire resistant material may be further attached to the surface of the metal bar wrapped by the bandage member.
  • the metal wire may be configured to be wound around the metal bar in a helical structure in a longitudinal direction of the metal bar.
  • the insulating tube may be made of a transparent silicone material.
  • the metal bar may be provided to have flexibility by stacking metal plates having a thickness of 0.1 to 0.3 mm.
  • a battery pack including the above-described bus bar may be provided.
  • the bus bar according to the present invention is configured so that the metal bar does not come into direct contact with the surrounding metal object even if the exterior covering material of the bus bar is lost in case of fire, thereby preventing the occurrence of a short circuit.
  • the metal bar inside the exterior covering material is surrounded by a metal wire coated with a fire-resistant material, so even if the exterior covering material is lost during internal fire of the battery pack, the metal wire remains, even if the metal bar is stretched.
  • the surface of the bar does not come into direct contact with the surrounding metal object, thus preventing short circuits.
  • FIG. 1 is a schematic perspective view of a flexible bus bar according to the prior art.
  • FIG. 2 is a reference diagram illustrating an example in which an insulating tube of the flexible bus bar of FIG. 1 is lost due to ignition, and the bus bar directly touches a surrounding metal object to cause a short circuit.
  • FIG 3 is a perspective view of a bus bar according to a first embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a bus bar taken along line I-I' of FIG. 3 .
  • FIG. 5 is a view for explaining a manufacturing process of a bus bar according to the first embodiment of the present invention.
  • Figure 6 is a side view of the bus bar of Figure 5 (b).
  • FIG. 7 is a comparison view of FIG. 1 , illustrating a contact state between the bus bar and a surrounding metal object after the insulating tube of the bus bar according to the first embodiment of the present invention is completely lost.
  • FIG. 8 is a diagram illustrating a bus bar according to a second embodiment of the present invention.
  • FIG. 9 is a diagram illustrating a bus bar according to a third embodiment of the present invention.
  • FIG. 3 is a perspective view of the bus bar 100 according to the first embodiment of the present invention
  • FIG. 4 is a cross-sectional view of the bus bar 100 taken along line I-I' of FIG. 3 .
  • the bus bar 100 includes a metal bar 10 made of an electrically conductive metal material, and the remaining parts except for both ends of the metal bar 10 . It includes an insulating tube 20 that covers it so as not to be exposed to the outside, and a bandage member 30A provided to surround the circumference of the metal bar 10 inside the insulating tube 20 .
  • the thickness and width of the metal bar 10 may be determined according to the magnitude of the current, and various lengths may be manufactured according to an installation location or installation conditions.
  • the metal bar 10 may be a stack of several thin metal plates.
  • the metal bar 10 may be provided in a flexible structure capable of twisting or bending by stacking copper plates of approximately 0.1 to 0.3 mm and integrally welding both ends thereof.
  • One end of both ends of the metal bar 10 may be connected to a (+) terminal of any one battery module, and the other end may be connected to a (-) terminal of another battery module.
  • the terminals of the battery module may be formed in a bolt type and inserted into the holes H provided at both ends of the metal bar 10 and then tightened with nuts so that the connection portion may be firmly fixed.
  • the insulating tube 20 may be made of a polymer material having silicone or rubber elasticity as an exterior covering material of the metal bar 10, and the metal bar 10 so as to surround the metal bar 10 and the bandage member 30A together. can be covered on
  • the insulating tube 20 of this embodiment may be made of transparent silicon.
  • the insulating tube 20 made of a transparent silicon material has the advantage that the binding state of the metal bar 10 and the bandage member 30A therein can be checked at any time.
  • the bandage member 30A is a component surrounding the circumference of the metal bar 10 from the inside of the insulating tube 20, and the surface is coated with a coating material 31 having electrical insulation and fire resistance. It may consist of a treated metal wire.
  • the insulating tube 20 melts and is completely lost, but the bandage member 30A is made of a metal wire, so it remains as it is wrapped around the metal bar 10 . Therefore, even when the insulating tube 20 is lost in case of fire and the middle part of the metal bar 10 is exposed, the structure in which the bandage member 30A still surrounds and supports the metal bar 10 is maintained as it is, the metal bar 10 Even if the metal bar 10 extends toward the surrounding metal structure 4 , it is possible to prevent the surface of the metal bar 10 from directly contacting the surrounding metal structure 4 . At this time, the bandage member 30A comes into contact with the surrounding metal structure 4, but the bandage member 30A is coated with an electrically insulating and fire-resistant material, so that a current does not flow and a short circuit does not occur.
  • the coating material 31 having insulation and fire resistance at least one of mica, silica, and ceramic may be employed.
  • any one of mica, silica, and ceramic may be used as the coating material 31 of the metal wire. That is, in addition to the coating materials 31 exemplified herein, any material having excellent electrical insulation, fire resistance, and heat resistance properties may be used to coat the metal wire.
  • a plurality of metal wires constituting the bandage member 30A may be provided in the form of an annular metal band.
  • a plurality of the annular metal bands may be arranged at regular intervals along the longitudinal direction of the metal bar 10 .
  • the annular metal bands may be arranged at regular intervals along the length direction of the metal bar 10 .
  • it may be easy to deform the shape by bending the metal bar 10 .
  • the bandage member 30A when the bandage member 30A is configured in the form of a long tube like the insulating tube 20, most areas of the metal bar 10 are the bandage member 30A. ) may be very difficult to bend or twist the metal bar 10 by being held by.
  • the bandage member 30A is manufactured in the form of a plurality of metal bands and disposed at regular intervals along the longitudinal direction of the metal bar 10 as in the present embodiment, the metal bars not surrounded by the metal bands ( 10) Any area can be bent or twisted.
  • the annular metal bands are mounted on the metal bar 10, and when the annular metal bands are wrapped around the metal bar 10, use a clinching tool to attach the annular metal bands to the metal bar ( 10) by performing a press-fixing process to strengthen the binding force between the metal bands and the metal bar (10).
  • the insulating tube 20 is covered on the outside of the metal bar 10 and the bandage member 30A to shield the rest of the metal bar 10 except for both ends of the bus bar ( 100) to ensure electrical safety.
  • the bus bar 100 has a metal wire interposed inside the insulating tube 20 , and thus, compared to the conventional bus bar 100 , the thickness of the covering portion may be formed thicker.
  • one end is fixedly connected to the (+) terminal of any one battery module and the other end is fixedly connected to the (-) terminal of the other battery module. It can be used to connect a plurality of battery modules in series in a pattern of
  • the bus bar 100 melts and disappears completely, and even if the shape of the bus bar 100 is stretched, the metal bar 10 . There is no direct contact between the and surrounding metal objects.
  • the bandage member 30A is not lost but remains bound to the metal bar 10 .
  • a short circuit can be prevented by supporting the metal bar 10 so that the bandage member 30A does not contact the metal bar 10 and the surrounding metal structure 4 .
  • FIG. 8 is a diagram illustrating a bus bar 200 according to a second embodiment of the present invention
  • FIG. 9 is a diagram illustrating a bus bar 300 according to a third embodiment of the present invention.
  • FIGS. 8 and 9 Next, other embodiments of the present invention will be described with reference to FIGS. 8 and 9 .
  • the bus bar 200 according to the second embodiment of the present invention is different from the first embodiment in that the metal wire constituting the bandage member 30B has a helical structure or a coil spring structure.
  • the configuration is the same.
  • the metal wire of the helical structure forming the bandage member 30B is a metal along the longitudinal direction of the metal bar 10 . It may be provided to surround the circumference of the bar 10 .
  • the insulating tube 20 is covered on the outside of the metal bar 10 and the bandage member 30B to shield the rest except for both ends of the metal bar 10, so that the bus bar 200 electrical safety can be ensured.
  • the metal wire having the helical structure may have a diameter before the metal bar 10 is inserted to be smaller than the width D of the metal bar 10 .
  • the metal bar 10 may be pressed by the bandage member 30B.
  • the bandage member 30B may be firmly bound to the metal bar 10 without performing additional processes such as bonding, welding, and pressing.
  • a metal wire having a helical structure (or a spring structure) made of only pure metal is prepared. Then, the metal wire of the helical structure (or spring structure) is deformed in a straight line through a leveling operation. Then, the ceramic is melt-sprayed and coated on the surface of the metal wire.
  • heat treatment after glazing, chemical vapor deposition (CVD), physical vapor deposition (PVD), etc. may be used. Then, the bandage member 30B according to the second embodiment may be provided by applying heat to the ceramic-coated metal wire to deform it into a metal wire type having a helical structure (or a spring structure).
  • the bus bar 300 according to the third embodiment of the present invention may further include a fire prevention tape 40 when compared with the above-described embodiments.
  • a fire prevention tape 40 is attached to the surface of the metal bar 10 , and the metal bar 10 and the fire tape 40 are integrally formed. It can be said that the structure is wrapped with the bandage member 30A and the insulating tube 20 is covered on the outside thereof.
  • Fire resistive tape (40, fire resistive tape) is a tape having a fire resistance property and electrical insulation of at least 600 ° C. or higher so as not to be lost in a fire, and the metal bar 10 is not exposed even if the insulating tube 20 is lost in a fire It is a component responsible for protecting the metal bar (10).
  • a mica tape having excellent fire resistance and heat resistance may be used as the fire prevention tape 40 .
  • mica tape may be used or any other tape having excellent electrical insulation, fire resistance, and heat resistance may be used.
  • the fire prevention tape 40 is attached to the metal bar 10 before the insulating tube 20 is covered on the metal bar 10.
  • the fire protection tape 40 having an adhesive component on one surface is preferable for easy attachment.
  • the fire protection tape 40 can be fixed to the metal bar 10 by the bandage member 30A of the first embodiment or the bandage member 30B of the second embodiment, it is okay if there is no adhesive component on one surface.
  • the bus bar 300 of this third embodiment can be called a bus bar 300 that is safer in terms of electrical insulation than the above-described embodiments. That is, in the case of a ceramic coating, it is not easily peeled off due to its strong coating power, but the coating may be broken when subjected to a strong impact.
  • a metal wire surrounds the metal bar 10 in case of fire, so that the metal bar 10 is attached to the surrounding metal structure 4 . Even without direct contact, current can flow through the metal wire, so there is no possibility of a short circuit.
  • the bus bar 300 of the third embodiment even if the ceramic coating is broken, the electrical insulation can still be secured by the fire prevention tape 40, and accordingly, a short circuit does not occur in the above situation.
  • the bus bar according to the present invention having the configuration and operation as described above, even if the exterior covering material is lost in case of fire, the metal bar 10 can be prevented from directly touching the surrounding metal structure 4, and thus a short circuit is not caused. may not be Therefore, it is possible to prevent the secondary fire accident from spreading.
  • the battery pack according to the present invention may be configured to include at least one or more of the above-described bus bars 100 .
  • the battery pack further includes battery modules electrically connected by the bus bar 100, as well as various devices for controlling the charging and discharging of the battery module, such as a BMS, a current sensor, a fuse, and the like. can do.
  • the battery pack may be applied to a vehicle such as an electric vehicle or a hybrid vehicle.
  • the battery pack may be applied to a power storage device or other IT products.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Une barre omnibus selon la présente invention comprend : une barre métallique formée d'un matériau métallique électroconducteur ; un élément de bandage toute la circonférence de la barre métallique sauf ses deux extrémités ; et un tube d'isolation entourant à la fois la barre métallique et l'élément de bandage, l'élément de bandage pouvant être formé sous la forme d'un fil métallique dont la surface est revêtue d'un matériau qui est électriquement isolant et résistant au feu.
PCT/KR2021/003674 2020-05-15 2021-03-24 Barre omnibus offrant une excellente sécurité en cas d'incendie WO2021230489A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US17/762,938 US20220415537A1 (en) 2020-05-15 2021-03-24 Bus Bar With Safety Against Fire
EP21804617.5A EP4024601A4 (fr) 2020-05-15 2021-03-24 Barre omnibus offrant une excellente sécurité en cas d'incendie
JP2022513378A JP7375292B2 (ja) 2020-05-15 2021-03-24 火事安全性が優秀なフレキシブルバスバーおよびバッテリーパック
CN202180005433.4A CN114424400A (zh) 2020-05-15 2021-03-24 具有防火安全性的汇流条

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2020-0058253 2020-05-15
KR1020200058253A KR20210141095A (ko) 2020-05-15 2020-05-15 화재 안전성이 우수한 버스바

Publications (1)

Publication Number Publication Date
WO2021230489A1 true WO2021230489A1 (fr) 2021-11-18

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US (1) US20220415537A1 (fr)
EP (1) EP4024601A4 (fr)
JP (1) JP7375292B2 (fr)
KR (1) KR20210141095A (fr)
CN (1) CN114424400A (fr)
WO (1) WO2021230489A1 (fr)

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EP4213293A3 (fr) * 2022-01-14 2023-08-30 SK On Co., Ltd. Bloc-batterie
WO2023224125A1 (fr) * 2022-05-19 2023-11-23 イビデン株式会社 Barre omnibus et son procédé de production, et dispositif de stockage d'énergie
WO2023215492A3 (fr) * 2022-05-04 2023-12-07 Aspen Aerogels, Inc. Protection de composants électriques dans des systèmes de batterie
WO2024024976A1 (fr) * 2022-07-29 2024-02-01 イビデン株式会社 Barre omnibus, son procédé de fabrication et dispositif de stockage d'énergie
WO2024024975A1 (fr) * 2022-07-29 2024-02-01 イビデン株式会社 Barre omnibus, son procédé de production et dispositif de stockage d'énergie
WO2024034542A1 (fr) * 2022-08-08 2024-02-15 イビデン株式会社 Barre omnibus et son procédé de production, et dispositif de stockage d'énergie

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KR20240023727A (ko) 2022-08-16 2024-02-23 주식회사 엘지에너지솔루션 소화액체가 포함된 인터-모듈 버스바
KR20240033312A (ko) 2022-09-05 2024-03-12 주식회사 엘지에너지솔루션 절연층을 포함하는 인터 모듈 버스바 및 이를 포함하는 전지팩
KR20240035365A (ko) 2022-09-08 2024-03-15 주식회사 엘지에너지솔루션 내화염성이 향상된 버스바 및 이를 포함하는 전지팩
KR20240047835A (ko) * 2022-10-05 2024-04-12 주식회사 엘지에너지솔루션 방화벽을 포함하는 버스바 어셈블리 및 이를 포함하는 전지팩
KR102627004B1 (ko) * 2023-07-03 2024-01-23 덕부화학 주식회사 전기 자동차용 배터리팩의 완충 버스바

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EP4213293A3 (fr) * 2022-01-14 2023-08-30 SK On Co., Ltd. Bloc-batterie
WO2023215492A3 (fr) * 2022-05-04 2023-12-07 Aspen Aerogels, Inc. Protection de composants électriques dans des systèmes de batterie
WO2023224125A1 (fr) * 2022-05-19 2023-11-23 イビデン株式会社 Barre omnibus et son procédé de production, et dispositif de stockage d'énergie
WO2024024976A1 (fr) * 2022-07-29 2024-02-01 イビデン株式会社 Barre omnibus, son procédé de fabrication et dispositif de stockage d'énergie
WO2024024975A1 (fr) * 2022-07-29 2024-02-01 イビデン株式会社 Barre omnibus, son procédé de production et dispositif de stockage d'énergie
WO2024034542A1 (fr) * 2022-08-08 2024-02-15 イビデン株式会社 Barre omnibus et son procédé de production, et dispositif de stockage d'énergie

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JP7375292B2 (ja) 2023-11-08
EP4024601A1 (fr) 2022-07-06
CN114424400A (zh) 2022-04-29
KR20210141095A (ko) 2021-11-23
US20220415537A1 (en) 2022-12-29
EP4024601A4 (fr) 2023-01-25
JP2022545548A (ja) 2022-10-27

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